<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/Common/uploadImg" enctype="multipart/form-data" method="post">
    <input type="file" name="img_file"/>
    <br/>
    <input type="button" value="提交" onclick="uploadFile()"/>
</form>

</body>
</html>